I made this on the weekend. With scavenged pail and hose, it's probably cheaper than a 2 dollar plunger and it works fantastically. If you don't have room to roll it on a floor just put it on a counter and rock and roll it for a while. Also I'm going to upgrade it to a Gamma Lid, I understand they don't leak. You could easily screw 4 casters to a piece wood and make a roller that you can turn it on in a stationary location.
https://www.youtube.com/watch?v=-BuqvJEVNqU
https://www.youtube.com/watch?v=-BuqvJEVNqU